KanjiJLPT N1
Mortar

Mnemonic

Wide vessel with a hollow center — a grinding mortar.

Details

The keyword for 臼 is mortar. This kanji represents a mortar, specifically the traditional bowl-shaped vessel used for grinding or pounding grain, herbs, or other materials. In East Asian cultures, stone or wooden mortars of this type were essential household tools, particularly for pounding rice into mochi. The character's shape visually resembles the concave form of a mortar when viewed from above.
On'yomi
きゅう、ぐ
Kun'yomi
うす、うすづ.く